Results 61 to 70 of about 419,985 (168)

Spectropolarimetry for Discerning Geometry and Structure in Circumstellar Media of Hot Massive Stars

Galaxies
Spectropolarimetric techniques are a mainstay of astrophysical inquiry, ranging from Solar System objects to the Cosmic Background Radiation. This review highlights applications of stellar polarimetry for massive hot stars, particularly in the context of
Richard Ignace, Kenneth G. Gayley, Roberto Casini, Paul Scowen, Christiana Erba, Jeremy Drake   +5 more
doaj   +1 more source

Deneb Is a Large-amplitude Polarimetric Variable

The Astrophysical Journal Letters
We write to report the discovery that Deneb is a large-amplitude polarization variable. Over a ∼400 days time span from 2022 August Deneb’s polarization was typically around 3900 parts per million (ppm) in the SDSS ${g}^{{\prime} }$ band.
Daniel V. Cotton, Jeremy Bailey, Jean Perkins, Derek L. Buzasi, Ievgeniia Boiko   +4 more
doaj   +1 more source

Starlight Gospel Singers

, 1985
Photograph of the Starlight Gospel Singers performing at the Blue Ridge Folklife Festival in Ferrum ...
Starlight Gospel Singers;
core  

Interpretations of the 10% Polarization Observed in the Early Forward Shock Afterglow of GRB 091208B

The Astrophysical Journal
The ∼10% optical polarization observed at the early stage of GRB 091208B comes from the forward shock emission, which is higher than the conventionally predicted value.
Yang Liu, Mi-Xiang Lan
doaj   +1 more source

Traces of exomoons in computed flux and polarization phase curves of starlight reflected by exoplanets

, 2018
Context. Detecting moons around exoplanets is a major goal of current and future observatories. Moons are suspected to influence rocky exoplanet habitability, and gaseous exoplanets in stellar habitable zones could harbor abundant and diverse moons to ...
L. Rossi, J. Berzosa Molina, D. M. Stam
core   +1 more source

Multiwavelength Emission of Gamma-Ray Burst Prompt Phase. II. Spectral Polarimetry

The Astrophysical Journal
Polarization spectra were predicted within the photosphere model. To seek more clues to distinguish between the models, both the time-resolved and time-integrated polarization spectra from optical band to MeV gamma-rays of the magnetic reconnection model
Jia-Sheng Li, Mi-Xiang Lan
doaj   +1 more source

Measurements of the polarization of starlight [PDF]

, 1968
A computer catalogue of photoelectric measurements of the polarization of starlight is being compiled, together with other relevant data about the measured. stars.
Pratt, Neil M.
core  

Using polarimetry to detect and characterize Jupiter-like extrasolar planets [PDF]

, 2004
Using numerical simulations of flux and polarization spectra of visible to near-infrared starlight reflected by Jupiter-like extrasolar planets, we show that polarimetry can be used both for the detection and for the characterization of extrasolar ...
L. B. F. M. Waters, J. W. Hovenier, Hovenier, J.W., D. M. Stam, Waters, L.B.F.M., Stam, D.M.   +5 more
core   +1 more source

Investigation for Binary Characteristics of LS I + 61°303 with Optical Polarization

The Astrophysical Journal
We investigate the optical linear polarization caused by Thomson scattering of the stellar radiation for gamma-ray binary LS I + 61°303, which likely contains a young pulsar.
Jiaxin Liu, Haoyu Yuan, Xiangli Lei, Wenlong Xu, Jumpei Takata, Weihua Lei   +5 more
doaj   +1 more source

Time-integrated Polarizations of the GRB X-Ray Flares

The Astrophysical Journal
Despite decades of studies, the energy dissipation mechanism of the X-ray flares in the afterglow phase of gamma-ray bursts (GRBs) is still debated. If the jet is dominated by the Poynting flux, there would be a large-scale ordered magnetic field in it ...
Xing-Yao Wang, Mi-Xiang Lan
doaj   +1 more source